Bike Reviews

My husband, Dave--an electrical engineer who hates climbing hills as much as he loves playing video games--is grinning as he waits for me at the top of a hill. In the 28 years that I’ve known him, this is the first time he’s ever beat me up a hill, but his achievement isn’t the only reason­ he’s smiling: “I could definitely make it to the office on this,” he gushes.

The object of Dave’s enthusiasm is the Kuo, a folding e-bike that employs a 250-watt rear hub motor and 24-volt lithium-ion battery to move you along at a top assisted speed of 15.5 mph, for rides as long as 25 miles. Its folding frame lets you carry it into your office or put it into your car’s trunk for a mixed-mode commute. Although it’s meant for utility, Dave and I discovered it’s also lots of fun.

The bike has two power modes: “Pedal assist” relies on a cadence sensor to tell when you’re pedaling, and meters out a boost. You can also ride in “power on demand” mode, using the twist throttle to call for an extra jolt when you need it—or feel like it. In both modes, you can choose a high or low boost. There are some quirks: With the boost on, the bike surges forward on your first pedal stroke, so you need a firm grip—but there’s no quicker­ way to leave a stop light. The motor cuts out when you coast or brake, then kicks back on when you resume pedaling.

The Kuo comes with a computer (in addition to speed, ­distance, and other cycling functions, it also displays the battery’s charge level), fenders, a bell, and lights. You can buy a bag that holds the whole bike ($60), but I found carrying the bulky, heavy package to be difficult. Instead, I used a bungee cord to supplement the magnetic clasp, keeping the frame’s halves together when lifted. A British brand, A2B has sold bikes in the US since 2006 and currently sells the Kuo and other models in about 150 retailers. The number of shops is growing, so look for one near you.—Emily Furia